Cooking cakes – what do the ingredients do?

Cooking cakes – ingredients matter

 

What happens if I leave things out?

In this experiment you make a batch of small sponge cakes.

Each time you leave one ingredient out and see what happens.

Why do I need to do that?

If you leave an ingredient out, the look and the taste of the cake changes.

This picture shows sponge cake with no egg, no fat, no baking powder

Cakes with ingredients missing

What to do

Make 4-5 batches of sponge cakes – each batch has an ingredient missing.

 

Sponge cake basic recipe – makes 6 cakes

60 g margarine

60 g caster sugar

1 egg, beaten

60 g plain flour

1 level teaspoon baking powder

Method

Preheat the oven to 180C.

Beat the margarine and sugar together until creamy.

Beat in the egg and stir in the sieved flour and baking powder until smooth.

Spoon equal amounts into 6 baking cases and bake for 20 -25 minutes until firm and golden.

Cool on a wire rack.

 

Leave out the egg

Follow the basic recipe but replace the egg with 60 ml (60g) water.

Share into 6 baking cases and bake in the same way.

cake no egg

Leave out the fat – margarine

Mix together the sugar, flour, baking powder and egg to a batter.

Spoon into 6 baking cases and bake in the same way.

cake no fat

Leave out the baking powder

Make the same as the basic recipe but don’t add the baking powder.

Share into 6 baking cases and bake in the same way.

 

Leave out the sugar

Mix the margarine, flour and baking powder together.

Share into 6 baking cases and bake in the same way.

 

Use the chart to compare results

 

Cake Flavour Texture
Basic recipe Buttery, sweet, delicious Spongy with air bubbles and well risen
No egg Sweet and buttery but difficult to eat Dough collapses in middle and is stringy
No fat Dry and sweet but not delicious Spongy and light, but tough
No baking powder Sweet and firm, buttery Firm and rather hard
No sugar No sweetness or butteriness Hard and chewy

 

So what does each ingredient do?
Work it out from the change in flavour and texture of the cakes.

 

Ingredient in cake What does it do?
Egg
Margarine – fat
Baking powder
Sugar

Of course I didn’t try and cook a cake without flour!

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